Transient behaviour of grounding systems in multilayer soil under lightning strikes

Sengar, Kaushal Pratap; Chandrasekaran, K.

doi:10.1007/s00202-021-01367-6

Cited by 6 publications

(3 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Resistansi pentanahan dapat diartikan sebagai resistansi antara elektroda dengan titik yang sangat jauh (titik dengan potensi nol) pada bumi. Nilai resistansi, induktansi dan kapasitansi dari pentanahan netral peralatan dapat ditunjukkan [12]:…”

Section: A Pentanahan Gardu Indukunclassified

Analisis Pentanahan Gardu Induk Akibat Surja Petir Menggunakan Finite Elemen Method

Fitriani¹,

Syafriwel²,

Hidayat³

et al. 2023

JJEEE

View full text Add to dashboard Cite

Sambaran petir pada sistem tenaga bisa mengganggu keandalan sistem, serta senantiasa jadi salah satu tantangan utama dalam proses desain gardu induk. Hal- hal yang butuh dicermati dalam mendesain sistem pentanahan diantaranya, peningkatan tegangan tanah (Grond Potensial Rise), keamanan tegangan langkah serta tegangan sentuh pada gardu induk, dan besarnya nilai impedansi akibat dari surja petir. Tujuan dari penelitian ini untuk melihat besar arus sambaran petir yang terjadi pada gardu induk dengan variasi area zona pentanahan grid pada gardu induk. Adapun simulasinya menggunakan aplikasi ETAP memakai metode FEM (Finite Element Method) dibuat untuk menampilkan ikatan antara luas zona grid, dimensi konduktor serta peningkatan GPR akibat sambaran surja petir. Nilai kenaikan tegangan yaitu sebesar 13289V, tegangan sentuh yang didapat sebesar 490,1V pada bobot badan 50kg dan 663,4V bobot badan 70kg, sedangakan untuk tegangan langkah yaitu sebesar 1372,5V pada bobot badan 50kg dan 1857,6V bobot badan 70kg pada luas zona grid 10 x 10 m2. tegangan sentuh yang didapat sebesar 832,87V pada bobot badan 50kg dan 1127,2V bobot badan 70kg. sedangakan untuk tegangan langkah yaitu sebesar 2743,2V pada bobot badan 50kg dan 3712,8V bobot badan 70kg pada luas zona grid 50 x 50 m2. Hasil akumulasi arus gangguan akibat sirja petir dengan variasi arus injeksi dimana semakin besar arus injeksi yang diberikan maka semakin besar arus gangguan surja petir yang timbul.Lightning strikes in power systems can compromise system reliability and have always been one of the major challenges in the substation design process. Things that need to be considered in designing a grounding system include ground voltage increase (Ground Potential Rise), step voltage safety and touch voltage at the substation, and the magnitude of the impedance value due to lightning surges. The purpose of this study is to see the magnitude of the lightning strike current that occurs at the substation with variations in the area of the grid grounding zone at the substation. The simulation using the ETAP application using the FEM (Finite Element Method) method is made to display the bond between the grid zone area, conductor dimensions, and the increase in GPR due to lightning strikes. The voltage increase value is 13289V, the touch voltage obtained is 490.1V at 50kg body weight and 663.4V 70kg body weight, while the step voltage is 1372.5V at 50kg body weight and 1857.6V 70kg body weight at zone area grids 10 x 10 m2. The touch voltage obtained is 832.87V for a body weight of 50kg and 1127.2V for a body weight of 70kg. while the step voltage is 2743.2V for a body weight of 50kg and 3712.8V for a body weight of 70kg for a grid zone area of 50 x 50 m2. The accumulated fault current results from lightning surges with injection current variations where the greater the injection current, the greater the lightning surge fault current that arises.

show abstract

Section: A Pentanahan Gardu Indukunclassified

Analisis Pentanahan Gardu Induk Akibat Surja Petir Menggunakan Finite Elemen Method

Fitriani¹,

Syafriwel²,

Hidayat³

et al. 2023

JJEEE

View full text Add to dashboard Cite

show abstract

“…The voltage distribution depends on the distance between the parallel electrodes, the greater the electrode distance, the more even the voltage distribution, the more uneven the voltage, and the closer the parallel electrode distance, the more even the voltage distribution. You can see in the picture below the form of a grounding grid without rods and with rods [5]: Figure 1 is a grid grounding system without rods, and Figure 2 is a grid grounding system with rods.…”

Section: Introductionmentioning

confidence: 99%

“…Ayu Fitriani 1*) , Joel Panjaitan 2) , and Syofyan Anwar Syahputra In a grounding system, there is a strong expectation that the grounding system will continue to function properly against various disturbances, including transient variations in voltage and current that must be transported and supplied to the ground. Due to the uncertain nature of the frequency and location of lightning strikes, it is necessary to analyze transient currents in the substation grounding network due to lightning strikes on ground conductors up to variations in the location of the strike [4] [5].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Soil Type on Touch Voltage and Step Voltage in the Grid Grounding System

Fitriani,

Panjaitan,

Syahputra

2024

ELKHA

View full text Add to dashboard Cite

The grounding system is one of the security systems in substations to channel excess voltage caused by lightning strikes that occur at substations, as well as electrical equipment. To design a grounding system, there are several factors that must be considered, including the type of soil, the configuration of the grounding system, the resistivity of the soil, and the condition of the surrounding environment. The aim of this research is to determine the safe limits in the substation grid grounding system which is influenced by the type of soil and influences the touch voltage and step voltage, which can be dangerous to humans. The method used is simulation with the Finite Element Method (FEM) in the ETAP application. Finite Element Method (FEM) is a method that uses image mediation by assuming that the grounding system is an equipotential structure. The test results were deliberately carried out with larger substation area parameters and different soil types, so that the differences between the influence and appearance of touch voltage and step voltage can be seen clearly.

show abstract

Dynamic modeling of grounding device impact characteristics considering coupling of river seepage, water velocity and current dispersion

Li,

Zhu,

Bao

et al. 2024

Electr Eng

View full text Add to dashboard Cite

Transient behaviour of grounding systems in multilayer soil under lightning strikes

Cited by 6 publications

References 41 publications

Analisis Pentanahan Gardu Induk Akibat Surja Petir Menggunakan Finite Elemen Method

Analisis Pentanahan Gardu Induk Akibat Surja Petir Menggunakan Finite Elemen Method

The Effect of Soil Type on Touch Voltage and Step Voltage in the Grid Grounding System

Dynamic modeling of grounding device impact characteristics considering coupling of river seepage, water velocity and current dispersion

Contact Info

Product

Resources

About